MadVR's smooth motion in Avisynth for frame-rate conversions?

[Greathelp]

I was very impressed with madVR's new "Smooth motion" feature, and was wondering if there's a way to achieve similar results when converting video. Being an AviSynth newbie (using mostly MeGUI) it'd be great to know how to do it for 23.976 to 25fps conversions (and other combinations), since even commercial applications give disappointing results (jerky motion). I am not looking for an SVP-type smooth effect, but rather sth. more natural like madVR's feature. Is this possible? Thanks...

[jagabo]

I don't know what MadVR does. But the usual method of converting 24 fps film to 25 fps PAL video is simply to speed it up. You can do that in AviSynth with AssumeFPS(). Of course, you'll need to speed up the audio too. An alternate method, not as smooth, is to use pulldown. You can do that with ChangeFPS(50).SeprateFields().SelectEvery(4,0,3). Worst of all is simply duplicating every 24 frame, ChangeFPS(25), which gives you one jerk every second. Or maybe blending frames with ConvertFPS(25). All the latter options don't require changing the audio.